Topological effects in QCD and the problem of short-distance singularities

Details Topological effects in QCD and the problem of short-distance singularities Topological effects in QCD and the problem of short-distance singularities

2004-04-05

arxiv.org/abs/hep-th/0404034v2

Phys.Lett. B593 (2004) 296-301

Physics

High Energy Physics

High Energy Physics - Theory

Plain TeX source, 10 pages, reference added, version published in PLB

Scientific paper

10.1016/j.physletb.2004.04.076

The topological susceptibility and the higher moments of the topological charge distribution in QCD are expressed through certain n-point functions of the scalar and pseudo-scalar quark densities at vanishing momenta, which are free of short-distance singularities. Since the normalization of the correlation functions is determined by the non-singlet chiral Ward identities, these formulae provide an unambiguous regularization-independent definition of the moments and thus of the charge distribution.

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